Die



G. W. LAMB March 286, 1935.

DIE

Filed March 28. 1954 Fig. 2.

Patented Mar. 26, 1935 l"1,995,88s- -I DIE" GeorgeVlLLalilL BeverlyQf Mass., assigner tof` United'ShoeMachineryCorporation, Paerson.

vN. J a corporation of New Jersey Application Machf 28 menting I shoe thereof.'`

One type of p into Commoniuse vfor ornainentingfshoeV uppersy comprises a base carryingl aplurality.' of 1 punches and` af' depressible "work support mounted upon the 'base for positioning apiece of work above thepunches prior tolapplic'ation ofpressure'to forcef'thepunches through the work. It is an object of the present invention to provide a die of the type referred to of improved construction parts "by perforating portions whichwill permit rapidpdetachmentof thework` support when desired, as in instances where thev work support mustv be removed to replace orrepair the punches. Tol this end and as 4illustrated, the invention. provides adie comprising a base having cutting tools supported thereon, a work supporting plate, andyieldable members carried by the base and'adaptedto engage the plate to support it, together with means on thev base land plate Vfor detachably maintaining the plate upon the members in operative relation to the tools.

yOtherobjects and features of the invention will be apparent from the following detailed description when taken in connection with the accompanying drawing and will be pointed out in the claims. l

In the drawing,

Fig. 1 illustrates in plan view a die construction in accordance with one embodiment of the invention;

Fig. 2 is a side view partly in section of the die shown in Fig. 1; and

Fig. 3 is a detailed view `of the means for limiting movement of the stripper plate.

' As shown in Figs. 1 and 2, the illustrative die comprises a base plate 10, a punch plate 12 which carriesv a plurality of punches 14 arranged to produce an ornamental design in a shoe upper, and a work support or stripper plate 16 which is normally operative to support a work piece such as a vamp above vthe Lpunches preparatory to exerting pressure upon the work in the punchv ing operation, there being openings 18 in the work support through which the punches 14 can operate. The base plate 10 is supported upon rails 20 to which it is securedby set screws 22, this structure facilitating lateral movement of the die into and out of a perforating machine.

The work support 16 is normally supported in a plane slightly above the 'punches 14 by means of pins or studs 24 each of which extends through` '(Cl,16f1-"93. This invention relates to dies Vandis lhereini illustrated as embodied in a die for usein .or'naev inthe punch plate andan'opening i 28 in'thebase'plate. jEach of the pins V24* is pro-f vided'gwithafshoulder `30 adapted to vengage the l y under side ofthe plate 1K6, there beingfafv spring erforating die which has ycomer Y Insorder accurately-'tdposition lthe, 1'0 'Y porting plate 16;relative v,tothe punches, eachofV the pins 24 is `provided with a reduced portion 36 ,A above the shoulder 30 which is adapted freely to enter an opening 38 in the plate.` As'shown in Fig. 1, there are four pins 24 whichengage 15 the plate, thus accurately'to locate it relativelyY to Ithe punches with'the openings 18 in alinement therewith. To provide for support of the.. plate 16 f in large dies, one or more additional pins may be used, such as pin 39 which is similar 20 in-construction to pins 24 except that it does not have a reduced portion entering the plate.

For detachably securing thework support 16 tov the die there are provided members 40 -inV the `form of spring clips having portions 41v riveted'to the stripper plate 16 and havingleg portions 42 extending at right angles to the plate and each provided with a vertically extending slot ,v -44 adapted to engage a horizontal projectionin the form of a pin 46 extending from the base plate 10. The lower portions 48 of the members 40 are bent upwardly to form ringer grips for operating the clips. This pin and slotconstruction operates to f permit downward movement of the work support during a punching operation. Normally, however.' the plate 16 is urged outwardly of the punches by the springs 32, heightwise movement of the plate being limited by engagement of the pins 46 with the' bottoms of the slots 44, thus tovsecu're the plate in vengagement with the Vpins 24 and to maintain the openings 18 therein in alinementv with the punches 14. .i

When it is desired to yremove the plate 16, as sometimes becomes necessary in replacing a damaged punch, the spring clips 40'are bent outl wardly and the plate can then be pulled up- Y Y wardly off ofthe studs 24. The plate V*can readily be replaced merely by pressing the clips over `the f pins 46 downwardly until the reduced portions 36 of the pins 24 arelocated within the openings 38^ rand the pins 46 enter the slots 44 of theclips40.A

Having described my invention, what I claimA as new and desire to secure by Letters Patent of the United States is:

' base, a Work supporting plate, spring-pressed pinsv mounted upon the basev and having portions f Y adapted to engage the under side of the plate vnormally to support it abovethecutting tools,

and inter-engaging means upon'the plate and `base for detaohably securing the plate in positionk upon theipins. :Y

13. A die a Aba,se,p`unches carried'by the base`,a, y Y Y porting plate, pins slidably mounted the==base-ftmeans-earried by the platefor detachably en-I gagingr the base for securing the'platethereto@v Y V2. A die i'or ornamenting shoe parts-'comprising a base, punches mounted'upon the base; a work supporting plate, resilient means mounted upongftheshoulders. the base for supporting the plate, VspringV clips carried by the plate and having slots therein, and'i-ithe base, a. work supporting plate, afplurality of `projections upon the baseadaptedio ,o slots for limiting. heightwisemouement,

plate.

and adapted to engagefthe plate Vtc supportl itf L' the plate:andbasorfliinitinheightwisemowef thefbase, Vaworlrisupporting plate,ispring-pressed for ornamenting shoe partslcornprising, ,r

adapted to enter theslots. g t Y 5. A die comprising a base,`punches carried by the base, a `work supporting p1ate,1memrbersrfor l supporting the. plate comprising pins carriedrby portionsadaptei'ta entenOmnium?` inthe- Plate tolocatecheiplsteftelately iwi-nulles, and .l K y 10 means for maintaining theplate nposition upon slots therein, and projections upon kthe besef V`6. A die comprising a'base, punches carried .pins resilievntlyl-mounted on the base and havingV shoulders ,thereon 1.01' engaging l"theunzler side ofeplateitosuppcrt it and reduced `portions i adapted toenter openings in the plate` for 1o-V oa'tingthe plate'i'elatively to the ypunchespand s 1711K die wwe. punkoiiesfcm'ied bythe base; af work gsuppttingsphtm 'ai ipiur'tlitj 'ofrpnsaresiliemlyfmmnd omthepbase zauidglnm.:V Y ing shoulders thereon l,for engaging thefulrider,

Ysidezroifath'e fplatef tozsupportyit, seine tfthef .pms reducedfportionsfadapted .toifenrtexmznpeningsinthe plate, for.Y locatingtthe* ,plate rehtiel t tothe puhhes; andintermingtmeansfcarried.

plate.

Wiseman/ement ofthe Y n ,Y l 

